git checkout: add example for creating new branch based on remote branch with different name (#2494)

pages/common/git-checkout.md

@@ -6,6 +6,10 @@
 
 `git checkout -b {{branch_name}}`
 
+- Create and switch to a new branch based on a specific reference (branch, remote/branch, tag are examples of valid references):
+
+`git checkout -b {{branch_name}} {{reference}}`
+
 - Switch to an existing local branch:
 
 `git checkout {{branch_name}}`